6/22/2011STScI-2011-17177.Pandora's Cluster – Clash of the Titans
A team of scientists studying the galaxy cluster Abell 2744, nicknamed Pandora's Cluster, have pieced together the cluster's complex and violent history using telescopes... (More)

6/9/2011STScI-2011-21179.New Supernova Remnant Lights Up
Astronomers using NASA's Hubble Space Telescope are witnessing the unprecedented transition of a supernova to a supernova remnant, where light from an exploding star in a neighboring... (More)